Related Clues:

• Horseshoe shape
• If it fits, wear it
• Oxford, for one
• Fancy entrance
• Curved entranceway
• Part of a foot
• Vulnerable spot for Achilles
• Shoe insert
• "If the ___ fits . . ."
• St. Louis sight
• Man's command to his best friend
• Foot feature
• Impish
• Blackjack dealer's device
• Lab instruction?